Results 31 to 40 of about 740,837 (265)

Surface Damage Identification of Wind Turbine Blade Based on Improved Lightweight Asymmetric Convolutional Neural Network

open access: yesApplied Sciences, 2023
Wind turbine blades are readily damaged by the workplace environment and frequently experience flaws such as surface peeling and cracking. To address the problems of cumbersome operation, high cost, and harsh application conditions with traditional ...
Li Zou, Haowen Cheng, Qianhui Sun
doaj   +1 more source

A Robust Deep Learning-Based Damage Identification Approach for SHM Considering Missing Data

open access: yesApplied Sciences, 2023
Data-driven methods have shown promising results in structural health monitoring (SHM) applications. However, most of these approaches rely on the ideal dataset assumption and do not account for missing data, which can significantly impact their real ...
Fan Deng   +3 more
doaj   +1 more source

Competition between mesoplasticity and damage under HCF – Elasticity/damage shakedown concept [PDF]

open access: yes, 2007
 Lien vers la version éditeur: http://www.sciencedirect.com/science/article/pii/S0142112306003240The aim of this paper is to present new modelling dedicated to multiaxial high cycle fatigue (HCF), and applied to polycrystalline metals.
DRAGON, André   +2 more
core   +1 more source

Damage Quantification and Identification in Structural Joints through Ultrasonic Guided Wave-Based Features and an Inverse Bayesian Scheme

open access: yesSensors, 2023
In this paper, defect detection and identification in aluminium joints is investigated based on guided wave monitoring. Guided wave testing is first performed on the selected damage feature from experiments, namely, the scattering coefficient, to prove ...
Wen Wu   +5 more
doaj   +1 more source

Research on an Identification Method of Post Porcelain Insulator Damage Based on Variational Modal Algorithm

open access: yesZhejiang dianli, 2022
In view of the difficulty in signal identification in vibration acoustic detection of post porcelain insulators, A BP (backpropagation) neural network identification method based on variational mode decomposition (VMD) is proposed to identify the damage ...
LUO Hongjian   +3 more
doaj   +1 more source

Damage identification of bridge structure model based on empirical mode decomposition algorithm and Autoregressive Integrated Moving Average procedure [PDF]

open access: yesArchives of Civil Engineering, 2022
Time series models have been used to extract damage features in the measured structural response. In order to better extract the sensitive features in the signal and detect structural damage, this paper proposes a damage identification method that ...
Weijia Lu   +4 more
doaj   +1 more source

Significance of low energy impact damage on modal parameters of composite beams by design of experiments [PDF]

open access: yes, 2009
This paper presents an experimental study on the effects of multi-site damage on the vibration response of composite beams damaged by low energy impacts around the barely visible impact damage limit (BVID).
A Shahdin   +6 more
core   +1 more source

Damage Identification and Quantification in Beams Using Wigner-Ville Distribution

open access: yesSensors, 2020
The paper presents the novel method of damage identification and quantification in beams using the Wigner-Ville distribution (WVD). The presented non-parametric method is characterized by high sensitivity to a local stiffness decrease due to the presence
Andrzej Katunin
doaj   +1 more source

Correlating low energy impact damage with changes in modal parameters: a preliminary study on composite beams [PDF]

open access: yes, 2009
This paper is an experimental study of the effects of multi-site damage on the vibration response of a composite beam damaged by low energy impact. The variation of the modal parameters with different levels of impact energy and density of impact is ...
Morlier, Joseph   +2 more
core   +1 more source

Damage monitoring in sandwich beams by modal parameter shifts: a comparative study of burst random and sine dwell vibration testing [PDF]

open access: yes, 2010
This paper presents an experimental study on the effects of multi-site damage on the vibration response of honeycomb sandwich beams, damaged by two different ways i.e., impact damage and core-only damage simulating damage due to bird or stone impact or ...
Morlier, Joseph   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy